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Use geometry, a ruler, and a steady hand to create these amazing unfurling paper folds!

How many colors make black? Gather as many water soluble black markers as you can find.

During this lesson, learners will determine their blood pressure and learn about systolic and diastolic pressures.

The Sacred Cenote at Chichén Itzá is a sink hole, or well, containing groundwater. In this activity, learners create their own cenote using chalk, limestone, acids, and rain water.

By building a model of a lung and diaphragm, learners discover the function of various parts of the body's respiratory system.

This is a hands-on activity that uses bread and household materials to grow mold. Learners collect dust from a room, wipe it on food, and contain it. One to seven days later, mold has grown.

Learners will construct a model of a heart valve using a film canister, a piece of masking tape, and a piece of paper.

A design challenge that takes paper airplanes into an entirely different direction: a magnus glider uses cups and and rubber bands to create a glider that uses the same forces that a curveball (from b

In this activity, learners take their own pulse and explore how heart rate is affected by various activities.

Here's a very simple activity if you have paper and scissors: make one cut, unfold, and you have a beautiful star! A great way to learn about polygons and origami mathematics.